Modeling, Parameterization, and Identification of Rechargeable Lithium-Ion Batteries

FACUNDO QUIÑONES, RUBEN MILOCCO AND SILVIA REAL

Buenos Aires

Congreso; 20th Topical Meeting of the International Society of Electrochemistry, Advances in Lithium and Hydrogen Electrochemical Systems for Energy Conversion and Storage; 2017

The International Society of Electrochemistry

In this paper, following electrochemical arguments, we show that Lithium-Ion rechargeable battery can bemodeled as a cascade of a linear dynamic system with a static nonlinearity. The linear dynamic system isrelated to the transport of the reacting substances in the active material, governed by Fick?s laws. It isdescribed by two parameters and the structure of the diffusional process (S), used to model the activeQmax) and the other is a positive constant (α) related to the diffusion coefficient and maximumconcentration of reactants. The static nonlinearity is the electromotive force (EMF) which depends on theelectrochemical reactions at the electrode interfaces governed by a Butler-Volmer type equation.Accordingly, we show the most probable candidates for modeling the dynamic response of the rechargeable lithiumion batteries.